Removable segment for crusher rolls



May-21,1929- G. E. KRIDER 1,713,609

REMOVABLE SEGMENT FOR CRUSHER ROLLS Filed Oct. 5, 1927 Inventor wzwam' Attorng:

Patented May 21, 1929.

UNITED STATES PATENT OFFICE.

McLANAHAN-STONE MACHINE COMPANY, OF

A CORPORATION OF PENNSYLVANIA.

HOLLIDAYSBURG, PENNSYLVANIA,

REMOVABLE SEGMENT FOR CRUSI-IER ROLLS.

Application filed October 5, 1927.

This invention relates to an improvement in crushers of the single roll type and has primarily in view novel means for securing the crushing segments to the rolls in such a manner as to facilitate replacement.

Another object of the invention is to pro vide means for yieldably maintaining the segment securing means in tight engagement upon the roll at all times, thereby preventing any lost motion between the segments and the roll spider.

A further object is to provide means for constructing and assembling the elements of a crusher roll in a simple and practical manner, which is strong and durable, efiicient and reliable in performance, relatively inexpensive to manufacture, and otherwise Well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the special construction and combination of the various elements comprising the invention, reference being had to the accompanying drawings, wherein Figure 1 is an end elevational view of an assembled crusher roll constructed in accordance with my invention. 7

F i gure 2 is an elevational view looking toward the face of the roller; with parts shown in section. as taken substantially along a line 2-2 of Figure 1.

Figure 3 's a perspective view of one of the retaining wedges, and,

Figure l is a fragmentary transverse scctional view of a portion of the spider showingthe relative position of one of the segments carried thereby.

One of the novel and distinctive features of the presentinvention is the provision of a crusher roll consisting of a plurality of segmental shoes which are effectively locked in position on a spider or bed roll in such a manner that they may be readily assembled to provide the crushing surface, and at the same time, may be easily removed when desired for replacement or repairs.

Referring particularly to the details illustrated by the drawings, a pair of spider hubs are indicated at 5 disposed in spaced parallel relation upon a shaft 6 and having their outer periphery formed of a plurality of segment holding ribs 7. The ribs are arranged in spaced parallel relation and comprise alternately arrangedsmallerribs 8 and relatively Serial No. 224,222.

larger ribs 9, the latter preferably being of a substantially dove-tailed formation as clearly shown in Figure 4 of the drawing.

The spider thus formed from the hub and ribs is adapted to carry crusher segments 10 extending longitudinally ofthe shaft, each end of the segment having aprons 11 overlapping the outer end of the segments of the spider. The inner faces of each of the segments 10 are provided with legs 12 and 13 adapted to be seated within the recesses formed between the ribs 8 and 9, one of the legs indicated at 13 being considerably smaller than the recess within which the same is seated whereby to enable a wedge 14 to be inserted in the recess together with the legs whereby through the frictional engagement of the wedge with the dove-tailed edge of the rib 9 to retain the segments in position on the spider.

t The {vedge 14 has one or more of its faces aperec to provide a taperin enga ement between the rib 9 and le 1E and is also formed with a longitudinally extending bore 15, each end of each segment being provided with one of the wedges as illustrated in Figure 2 so as to securely retain each end of the segment in position on the spider. A spiral spring 16 extends between the Wedges 14 atthe opposite ends of each segment, the spring being inserted through the bore 15 thereof with the outer end of the spring tensionally secured against removal from the wedge b keys 17 inserted through one of the convolub10118 of the spring and disposed transversely of the end of the wedge, the tension of the spring serving toprevent the slipping of the key 17 from the end thereof. A counter-sink 18 is formed in the outer end of each of the Wedges within which the key 17 may seat so as to prevent the slipping of the keys from engagementfrom the spring.

One end of each of the segments 10 is provided with a lprojection or overhang indicated at 19 in igure 4 adapted to seat upon the outer end of theadjacent smaller rib 8, thereby forming a solid supporting means for that end of the segment and preventing any tendency of the segment to turn on the spider.

If desired the inner face of the segments at their or similar material to form a true and close point of contact with the ribs maybe provided with a covering 20 of type metal spring 16 and wedges 14 to release the segments after which the same may be readily removed from the spider and repaired or replaced by a new segment. 7

' It is obvious that the invention is susceptible' of various changes and modifications 7 without departing from the spirit or scope of the appended claims or sacrificing any of its advantages, and l accordingly claim all such forms of the device to which I am entitled.

I claim 2- V l. A crusher roll construction including a crusher spider having a plurality of segment holding ribs, crusher segments re1novably supported by said ribs, a wedge at each end of said segment frictionally engaging each segment with one of said ribs and aconnector for said wedges possessing a relatively high degree of elasticity throughout its length.

2. A crusher roll construction including a crusher spider having a plurality of holding ribs formedthereon, a plurality of crusher segments carried by the ribs and extending at opposite ends of the spider, a pair of wedges frictionally engaging each segment at opposite ends thereof and a connector for each pair of wedges possessing a relatively high degree of elasticity throughout its length and urging the same into engaged position inwardly of the segment.

3. In an attaching device for crusher roll the spider and segments comprising a pair of tapering Wedges engaging the opposite edges'of the segment and having a bore extending therethrough, a connector for said wedges possessing a relatively high degree of elasticity throughout its length, a counter sink at the end of the bore and each wedge adjacent the larger end thereof, and apin attachable at each end of the connector and seated within said counter sink whereby to prevent lateral movement of the pin.

. l. A crusher roll construction including a crusher spider having a plurality of pressure segment holding ribs arranged in spaced parallel relation, each alternate rib being of a substantially dove tailed formation, a plurality of crusher segments carried by the spider, each of saidsegments raving aprons formed at each end thereof in overlapping relation with the ends of the spider, legs formed on the inner face of the segment adapted to seat between the rib of the spider, a wedge arranged at. each end of each of the segments and adapted for insertion in frictional engagement between one of the legs of the segment and an adjacent dove tailed rib, a connector extending between the oppositely disposed wedges possessing a'relatively hig degree of elasticity throughout its length for retaining the wedges against outward movement, a key carried at each end of the connector retaining the same in engaged position with the. adjacent wedge and a projection formed on the under side of each ofthe segments having one side engageable with one of said ribs and its opposite side engageable by one of the wedges and frictionally retained therebetween by the action of said wedge.

In testimony whereof I ailix my signature.

GEORGE EDWARD KRIDER. 

